X0306 4 2020-04-13 false 0001693256 Select Energy Services, Inc. WTTR 0001221455 Ladhani Holli C. 1233 W. LOOP SOUTH, SUITE 1400 HOUSTON TX 77027 true true false false President and CEO Class A Common Stock 2020-04-13 4 P false 14524.00 3.44 A 542721.00 D Class A Common Stock 39582.00 I By Holli Ladhani RES, LLC Class A Common Stock 50436.00 I By Shaheen Ladhani RES No. 1, LLC Class A Common Stock 39582.00 I By Shaheen Ladhani RES, LLC This purchase was made pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on March 13, 2020. This transaction was executed in multiple trades at prices ranging from $3.18 to $3.50 per share. The price reported above reflects the weighted average purchase price on the date indicated. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above. /s/ Holli Ladhani by Adam R. Law, as Attorney-in-Fact 2020-04-14